SAN FRANCISCO--(BUSINESS WIRE)--McKesson Corporation (NYSE:MCK) today announced that John H. Hammergren, the company’s chairman and chief executive officer, will present at the 31st Annual J.P. Morgan Healthcare Conference in San Francisco at 10:00 a.m. PT on Monday, January 7, 2013. Audio webcasts with accompanying slides will be available live and archived on the company’s Investor Relations website at www.mckesson.com/investors. A complete listing of upcoming events for the investment community is available on the company’s Investor Relations website.